Automatic Certificates and HTTPS for everyone.

Lego

Let's Encrypt client and ACME library written in Go.

Features

ACME v2 RFC 8555
Register with CA
Obtain certificates, both from scratch or with an existing CSR
Renew certificates
Revoke certificates
Robust implementation of all ACME challenges
- HTTP (http-01)
- DNS (dns-01)
- TLS (tls-alpn-01)
SAN certificate support
Comes with multiple optional DNS providers
Custom challenge solvers
Certificate bundling
OCSP helper function

How to install.

Documentation is hosted live at https://go-acme.github.io/lego/.

Detailed documentation is available here.


Akamai EdgeDNS	Alibaba Cloud DNS	all-inkl	Amazon Lightsail
Amazon Route 53	ArvanCloud	Aurora DNS	Autodns
Azure	Bindman	Bluecat	BRANDIT
Bunny	Checkdomain	Civo	CloudDNS
Cloudflare	ClouDNS	CloudXNS	ConoHa
Constellix	deSEC.io	Designate DNSaaS for Openstack	Digital Ocean
DNS Made Easy	dnsHome.de	DNSimple	DNSPod (deprecated)
Domain Offensive (do.de)	Domeneshop	DreamHost	Duck DNS
Dyn	Dynu	EasyDNS	Epik
Exoscale	External program	freemyip.com	G-Core Labs
Gandi Live DNS (v5)	Gandi	Glesys	Go Daddy
Google Cloud	Google Domains	Hetzner	Hosting.de
Hosttech	HTTP request	Hurricane Electric DNS	HyperOne
IBM Cloud (SoftLayer)	IIJ DNS Platform Service	Infoblox	Infomaniak
Internet Initiative Japan	Internet.bs	INWX	Ionos
iwantmyname	Joker	Joohoi's ACME-DNS	Liara
Linode (v4)	Liquid Web	Loopia	LuaDNS
Manual	MyDNS.jp	MythicBeasts	Name.com
Namecheap	Namesilo	NearlyFreeSpeech.NET	Netcup
Netlify	Nicmanager	NIFCloud	Njalla
Nodion	NS1	Open Telekom Cloud	Oracle Cloud
OVH	plesk.com	Porkbun	PowerDNS
Rackspace	reg.ru	RFC2136	RimuHosting
Sakura Cloud	Scaleway	Selectel	Servercow
Simply.com	Sonic	Stackpath	Tencent Cloud DNS
TransIP	UKFast SafeDNS	Ultradns	Variomedia
VegaDNS	Vercel	Versio.[nl/eu/uk]	VinylDNS
VK Cloud	Vscale	Vultr	Websupport
WEDOS	Yandex Cloud	Yandex PDD	Zone.ee
Zonomi

If your DNS provider is not supported, please open an issue.